Friday

July 11, 2014

July 11, 2014

Number of results: 32,505

**Phisic mechanic**

A car of 1,500 kg accelerates uniformly from rest to a speed of 10 m / s in 3 s. (A) Find the work done on the car during that interval. (B) Find the average power developed by the engine in those first 3 s. (C) Find the instantaneous power of the motor at t = 2 s.
*October 4, 2010 by cls*

**physics**

In a test run, a certain car accelerates uniformly from zero to 17 m/s in 2.95s. a.) what is the magnitude of the car's acceleration? b.) how long does it take the car to change it's speed from 8.5m/s to 17m/s? c.) will doubling the time always double the change in speed?
*February 3, 2013 by george*

**precalc**

a 21-speed bike has varying top speeds dependent on the gear it's in. the bike's tire diameter is 26 inches. the bike can pedal at a maximum of 130 revolutions per minute. the front chain wheel has sprokets of 24, 32, and 40 teeth. the rear cassette sprokets have 28, 24, 21, ...
*January 20, 2009 by syd*

**precalc**

a 21-speed bike has varying top speeds dependent on the gear it's in. the bike's tire diameter is 26 inches. the bike can pedal at a maximum of 130 revolutions per minute. the front chain wheel has sprokets of 24, 32, and 40 teeth. the rear cassette sprokets have 28, 24, 21, ...
*January 20, 2009 by syd*

**physics**

A compact disk, which has a diameter of 12.0 cm, speeds up uniformly from zero to 4.40 rev/s in 3.20 s. What is the tangential acceleration of a point on the outer rim of the disk at the moment when its angular speed is 2.00(rev/s)?
*October 17, 2009 by angel*

**Physics**

At t = 0, a wheel rotating about a fixed axis at a constant angular deceleration of 0.37 rad/s2 has an angular velocity of 0.5 rad/s and an angular position of 8.5 rad. What is the angular position of the wheel after 2 s? Answer in units of rad
*March 5, 2013 by dallas*

**Physics**

(i)For the wheel of diameter 10 cm, find its final speed after traversing a distance of 10 m down an incline of 25º. Assume it starts from rest. I know i have to use the conservation of energy but how? i dont understand where to start off
*August 5, 2010 by Oisin*

**Math **

Find the speed of a point on the rim of a 24cm diameter fly wheel which is turning at 2800 revolutions per minute. Give your answer in meters per second.
*March 20, 2013 by Emily*

**physics**

A boat initially traveling at 10 meters per second accelerates uniformly at the rate of 5.0 meters per second squared for 10 seconds. How far does the boat travel during this time?
*October 8, 2010 by Josh*

**Physics**

A car accelerates uniformly (a = constant) from 34 meters/second up to 40 meters/second in 4.0 seconds. What is the acceleration of the car in meters/second2?
*September 18, 2011 by Kristina*

**physics**

A potter's wheel having a radius 0.45 m and a moment of inertia of 14.9 kg · m2 is rotating freely at 49 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 72 N. Find the effective coefficient of ...
*December 1, 2012 by heather*

**Physics-motion**

A car accelerates uniformly from rest at a. After a certain time, its acceleration becomes -a. It continues to travel and stops finally. If the total displacement of the car is L, what is the total time of travel? The answer is (4L/a)^(1/2). But why??
*March 8, 2014 by Anonymous*

**college physics **

A compact disk, which has a diameter of 12.0 cm, speeds up uniformly from zero to 4.40 rev/s in 3.20 s What is the tangential acceleration of a point on the outer rim of the disk at the moment when its angular speed is 3.00 {rev/s}?
*October 18, 2009 by carman*

**Astronomy**

For this question assume the moon is 110 of its diameter away from the Earth. The largest apparent size of Mercury that we ever see in the sky is 1/150 the apparent diameter of the Moon. The diameter of Mercury is about 4900 km. What is the closest that the Earth and Mercury ...
*August 27, 2013 by Elisabeth*

**Physics**

you measure the diameter of a circle then you calculate the radius of the circle using this diameter. (1) Which one has a greater uncertainty, the diameter or the radius? Why? you measure the radius of a circle then you calculate the diameter of the circle using this radius. (...
*June 29, 2012 by Denji*

**physics**

In the figure below, a constant horizontal force Fapp of magnitude 18 N is applied to a wheel of mass 12 kg and radius 0.50 m. The wheel rolls smoothly on the horizontal surface, and the acceleration of its center of mass has magnitude 0.50 m/s2. What is the friciotnal force ...
*April 7, 2010 by Jordan*

**college trig word problem**

A Ferris wheel has a radius of 25 feet.The wheel is rotating at two revolutions per minute.Find the linear speed, in feet per minute, of a seat on this ferris wheel.
*December 15, 2012 by Joel*

**Physics**

The wheel of a car has a radius of 0.288m and is being rotated at 830 revolutions perminute on a tire-blanacing machine. a)Determine the speed at which the outer edge of the wheel is moving. b)Determine the centripetal acceleration at which the outer edge of the wheel is moving.
*March 25, 2009 by Bee*

**astronomy**

the diameter of earth is 7928 miles. what is the diameter in inches? in yards? If the diameter of earth is expressed in 12,756km what is the diameter in meters? in centimeter? give yoiur answers in scientific notation
*May 22, 2010 by maria*

**math**

how many times does a wheel turn in travelling 3km if a circumfrence of a wheel is 2m?
*October 17, 2010 by Esin*

**math**

The cicircumference of a wheel is 2m how many times does the wheel turn in travelling 3km
*May 13, 2013 by terrall*

**physics**

If a 31.0 N·m torque on a wheel causes angular acceleration 22.0 rad/s2, what is the wheel's rotational inertia?
*April 7, 2010 by Jordan*

**maths**

a car travels 1 km in which each wheel makes 450 revolutions. Find the radius of its wheel
*January 23, 2012 by avanthika *

**Physics**

a 14.0 N·m torque on a wheel causes angular acceleration 11.3 rad/s2, what is the wheel's rotational inertia?
*November 6, 2012 by Torin*

**math**

if the unicycle with the largest wheel of 185 cm is ridden 1 km how many complete rotations will the wheel make
*May 9, 2013 by deb*

**phsyics**

A compact disk, which has a diameter of 12.0 cm, speeds up uniformly from zero to 2.50 rev/s in 2.10 s. What is the tangential acceleration of a point on the outer rim of the disk at the moment when its angular speed is the following values? (a) 2.00 rev/s
*October 24, 2010 by mary*

**Math ( trig )**

If a person on the Ferris wheel is 45 feet above the ground. The Gris wheel has a radius of 47.f and is 5 feet above the ground. At what degrees had the Ferris wheel rotated counted clockwise?
*March 12, 2014 by Gabby*

**physics**

helicopter at rest, uniformly accelerates upwards. After 25s flare fired horizontally from the heli. flare measured to 8s to reach the ground. a)What is the acceleration of the helicopter b) height of the helicopter the instant the flare reached the ground.
*October 31, 2012 by Anonymous*

**physics**

Please help with these problems. Thanks! Suppose the circumference of a bicycle wheel is 2 meters. If it rotates at 1 revolution per second when you are riding the bicycle, then your speed will be? Suppose you're on a Ferris wheel at a carnival, seated 10 m from the Ferris ...
*October 13, 2007 by Jules*

**Dynamics**

A pelton wheel attains its operating speed of 800 rev/min within 2s after it is turn on. Determine the constant angular accelerations of pelton wheel. also find the total number of revolutions the wheel makes before it attains operating speed
*July 31, 2012 by Dhilsath*

**math**

a bicycle wheel has a radius of 3 feet. what is the closest estimate of the distance of 4 full rotations of the wheel
*June 3, 2013 by brandon*

**physics**

Two objects of equal mass are on a turning wheel. Mass 1 is located at the rim of the wheel while mass 2 is located halfway between the rim and the axis of rotation. The wheel is rotating with a non-zero angular acceleration. For each of the following statements select the ...
*September 22, 2013 by Sue*

**Physical science**

What formula's do I use to solve these problems? A 1.04x10^3 kg car accelerates uniformly from rest to 12 m/s in 2.16 seconds. a) What is the work done on the car in this time interval? Answer in Joules. b) What is the power delivered by the engine in this time interval? ...
*March 2, 2008 by Christy*

**Math**

If the diameter of a wheel is 10 inches. What is the radius and how would I find its circumference. Thanks I do understand that the radius is twice the circumference.
*March 15, 2011 by Americal*

**physics**

The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.41 rad/s2. It accelerates for 25.5 s, then maintains a constant angular velocity. Calculate the total angle through which the wheel has turned 65.5 s after it begins rotating.
*February 10, 2012 by qwertzuiop*

**Physics**

The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.39 rad/s^2. It accelerates for 30.3 s, then maintains a constant angular velocity. Calculate the total angle through which the wheel has turned 69.1 s after it begins rotating.
*September 30, 2012 by Arthur*

**physics**

The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.45 rad/s2. It accelerates for 29.5 s, then maintains a constant angular velocity. Calculate the total angle through which the wheel has turned 63.7 s after it begins rotating.
*September 22, 2013 by Sue*

**Physical science**

What formula's should I use to solve these problems? A 1.04x10^3 kg car accelerates uniformly from rest to 12 m/s in 2.16 seconds. a) What is the work done on the car in this time interval? Answer in Joules. b) What is the power delivered by the engine in this time interval? ...
*March 1, 2008 by Christy*

**physical sciences**

Imagine a circle with a diameter of 2km.if this represents an atom ,which answer would best represent the nucleus?choose the correct answer:a table tennis ball(diameter;2cm)atennis ball(diameter;7cm)avolley ball(diameter;20cm)a soccer ball(diameter;25cm)
*January 28, 2013 by qwert*

**Physics**

Please help with these problems, I dont understand them. Thanks! Suppose the circumference of a bicycle wheel is 2 meters. If it rotates at 1 revolution per second when you are riding the bicycle, then your speed will be? Suppose you're on a Ferris wheel at a carnival, seated ...
*October 14, 2007 by Jules*

**Physics**

a track is mounted on a large wheel that is free to turn with negligible friction about a vertical axis. a toy train of mass m is placed on the track and, with the system initially at rest, the electrical power is turned on. the train reaches a steady speed v with respect to ...
*February 13, 2008 by Sarah*

**physcs**

A potter's wheel having a radius 0.55 m and a moment of inertia 11.6 kg·m2 is rotating freely at 55 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 66 N. Find the effective coefficient of kinetic ...
*April 17, 2010 by Kelsey*

**physical science**

A car starts from rest and accelerates uniformly along a straight horizontal road at 3 metres second squeared for 4 seconds.CALCULATE THE MAGNITUDE OF THE MAXIMUM VELOCITY OF THE CAR,I.E THE VELOCITY OF THE CAR AFTER ACCELERATING FOR 4 SECONDS.PLEASE SHOW ALL CALCULATIONS
*September 3, 2011 by Anonymous*

**Physichs**

A pedestrian is running at his maximum speed of 6.0m/s to catch a bus stopped by a traffic light. When he is 25m away from the bus the light changes and the bus accelerates uniformly at 1.0m/s^2. Find either (a) how far he has to run to catch the bus or (b) his frustration ...
*September 18, 2011 by Sebastian *

**Math**

You are in a car of a ferris wheel. The wheel has a radius of 8m and turns counterclockwise. Let the orgin be at the center of the wheel. Begin each sketch in parts a) and b) when the radius from the centre of the wheel to your car is along the positive x-axis. a) Sketch the ...
*March 6, 2013 by Kristien*

**Physics 1 (Calc Based)**

At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of –0.40 rad/s^2 has an angular velocity of 1.5 rad/s and an angular position of 2.3 rad. What is the angular position of the wheel at t = 2.0 s? Ans: Theta final=4.5 rad How do you solve step by ...
*March 31, 2010 by Jared*

**physics**

A torque of 0.97 N-m is applied to a bicycle wheel of radius 0.35 m and mass 0.75 kg. Treating the wheel as a hoop, find its angular acceleration.
*November 25, 2011 by pakilina*

**physics**

A wheel has a radius of 4.56 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 26.2°?
*March 8, 2012 by Jackie *

**phsyics**

A wheel has a radius of 6.6 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 52.0°?
*November 4, 2012 by Anonymous*

**physics**

A wheel has a radius of 6.6 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 52.0°?
*November 4, 2012 by Anonymous*

**Physics**

A Ferris wheel with radius 11.0 m rotates at a constant rate, completing one revolution every 33.9 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.227 rad/s2 when a passenger is at the top of the wheel. Find the magnitude and direction (in degrees below ...
*November 18, 2011 by Jacob*

**PHYSICS PLEASE HELP QUICK**

An object with an initial speed of 4.0 meters per second accelerates uniformly at 2.0 meters per second2 in the direction of its motion for a distance of 5.0 meters. What is the final speed of the object? Vi=4m/s a=2.0m/s*s d=5.0m Vf=? Vf©÷=Vi©÷+2ad Vf©÷=(4m/s)©÷+ 2(2m/s©÷)(5m...
*October 5, 2006 by Katelyn*

**physics**

If a wheel turns with a costant rotational speed then: each point on its rim moves with constant roational velocity, each point on its rim moves with constant translational acceleration, the wheel turns with constant translation acceleration, the wheel turns through equal ...
*December 9, 2006 by susane*

**physics**

The Graph above shows the speed of a car traveling in a straight line as a function of time. The car accelerates uniformly and reaches a speed Vb of 4.00 m/s in 8.00 seconds. Calculate the distance traveled by the car from a time of 1.20 to 4.40 seconds.
*September 8, 2013 by Karen*

**Physics**

A Ferris wheel with radius 9.8 m rotates at a constant rate, completing one revolution every 36.6 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.227 rad/s2 when a passenger is at the top of the wheel. Find the magnitude and direction of the passenger's ...
*November 17, 2010 by Sheva*

**Physics**

A Ferris wheel with radius 9.8 m rotates at a constant rate, completing one revolution every 36.6 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.227 rad/s2 when a passenger is at the top of the wheel. Find the magnitude and direction of the passenger's ...
*November 18, 2010 by Briana*

**Physics**

An electric motor rotating a workshop grind- ing wheel at a rate of 147 rev/min is switched off with a constant deceleration of 1.24 rad/s2. How long does it take for the grinding wheel to stop? Answer in units of s Through how many radians has the wheel turned during the ...
*December 6, 2011 by Matthew*

**PHYSICS**

A spinning wheel on a fireworks display is initially rotating in a counterclockwise direction. The wheel has an angular acceleration of -3.80 rad/s2. Because of this acceleration, the angular velocity of the wheel changes from its initial value to a final value of -21.0 rad/s...
*November 14, 2008 by Steven*

**A physics question**

I was researching amusement park rides for a recent project (from this site I have noticed that many others are in the same boat as me). Anywho, I am doing the Ferris wheel or the Giant Wheel, and I was wondering if this was right, with respect to potential energy: this is due...
*November 2, 2007 by Nessa*

**Science**

A torque of 60 N*m acts on a wheel of moment of inertia 30 kg*m^2 for 5 s and then is removed. a) What is the angular acceleration of the wheel? b) How many revolutions does it make in 15 s if it starts at rest?
*November 30, 2011 by John*

**physics**

A wheel has a radius of 6.6 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 52.0 rad?
*November 4, 2012 by Anonymous*

**physics**

008 (part 1 of 5) 10.0 points A wheel makes 72 revolutions in 2 seconds. What is the angular velocity of the wheel? Answer in units of cycles/s
*October 20, 2013 by Shelly*

**physics**

An airplane needs at least 145 meters of runway to take off. If the plane starts from rest and accelerates uniformly to a take-off speed of 170 km/hr then what is its acceleration in meters/second? How long does it take for the plane to become airborne?
*September 22, 2011 by John*

**Math**

A carnival Ferris wheel with a radius of 7 m makes one complete revolution every 16s. The bottom of the wheel is 1.5 m above the ground. Find the amplitude, vertical shift, phase shift and k value and period. Do all calculations and then make your final equation. Predict how ...
*March 25, 2013 by Krystien*

**math**

the radius of a circle when the numeric values of the circumference and area are equal. circumference = 2*pi*r area = pi*r^2 Set them equal and solve for r. thanks! i understand it now! 2*3.14*r=3.14*r^2 6.28*r=3.14*r^2 r=3.14 Is that right? It doesn't seem to be. 2*3.14*r=3....
*October 25, 2006 by christina*

**Physics**

A Ferris wheel with radius 14.0m is tuurning about a horizontal axis through its center. The linear speed of a passenger on the rin is constant and equal to 7.00 m/s. Whatare the magnitude and direction of the passengers acclerations as she passes through a) the lowest point ...
*June 8, 2009 by Sarah*

**physics **

How many revolutions per minute would a 16m -diameter Ferris wheel need to make for the passengers to feel "weightless" at the topmost point? All I want to know is where do I start? I thought I would set a(centripital accelteration) = (9.8 m/s^2)?
*September 28, 2013 by girlwithaquestion*

**5th grade math (word problems)**

I'm not sure how to solve this: A group of friends went to an amusement park. 10 of them rode the ferris wheel, 15 rode carousel, and 11 rode the roller coaster. 7 of them rode both the ferris wheel & roller coaster. 4 rode both the ferris wheel & carousel. 5 rode both the ...
*May 2, 2013 by Alex*

**Physics**

A boy sits on a ferris wheel. how much work is done on him by gravitional forces when the wheel makes one complete turn? Explain.
*November 14, 2010 by Anonymous*

**Physics 203**

A wheel has a thin 2.7 kg rim and four spokes each of mass 1.3 kg. Find the kinetic energy of the wheel when it rolls at 6.0 m/s on a horizontal surface.
*April 6, 2011 by Kayla*

**Physics**

A torque of 60 N*m acts on a wheel of moment of inertia 30 kg*m^2 for 5 s and then is removed. a) What is the angular acceleration of the wheel? rad/s^2 b) How many revolutions does it make in 15 s if it starts at rest?
*November 28, 2011 by John*

**math**

if a Ferris wheel with a radius of 22 feet takes 25 seconds to turn 4(pi)/5 radians, find the angular speed of the wheel! please help asap
*February 8, 2013 by carlee*

**Physics**

A bicycle wheel of radius 0.30 m is spinning at a rate of 60 revolutions per minute. What is the centripetal acceleration of a point that is 0.11 m from the outer edge of the wheel?
*February 17, 2013 by Erin *

**physics**

questions( there are 3 so I will # 1-3) info: A 18.9 kg object is attached to a cord that is wrapped around a wheel of radius 10.7 cm. The acceleration of the object down the frictionless incline is measured to be .9 m/s2. Assume the axle of the wheel to be frictionless. The ...
*March 24, 2008 by Ty*

**Physics - Rotational Mechanics**

The combination of an applied force and a constant frictional force produces a constant total torque of 35.8 Nm on a wheel rotating about a fixed axis. The applied force acts for 5.95 s. During this time the angular speed of the wheel increases from 0 to 9.9 rad/s. The applied...
*March 4, 2007 by John*

**physics**

A 1.50 103-kg car starts from rest and accelerates uniformly to 18.5 m/s in 11.3 s. Assume that air resistance remains constant at 400 N during this time. (a) Find the average power developed by the engine. 1 W (b) Find the instantaneous power output of the engine at t = 11.3 ...
*February 24, 2012 by Mark*

**physics**

When a wheel of radius R rotates about a fixed axis, do all points on the wheel have 1) The same angular velocity? Explain. 2) The same linear velocity? Explain. If the angular velocity is constant, 3) describe the linear velocities and accelerations (radial, tangential, total...
*February 10, 2012 by qwertzuiop*

**scientist**

suppose a polar bear running with an initial speed of 4.0 m/s accelerates uniformly for 18s. what is the bear's maximum speed if the bear travels 135m during the 18s of acceleration? Give the answer in both meters per second and kilometers per hour.
*September 16, 2009 by NoNo100*

**physics**

A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 12 m/s, skates by with the puck. After 2.0 s, the first player makes up his mind to chase his opponent. If he accelerates uniformly at 4.0 m/s2, determine each of...
*September 15, 2011 by ashley*

**Physics!!!**

A 2300. kg car starts from rest and accelerates uniformly to 24.0 m/s in 24.0 s. Assume that air resistance remains constant at 510 N during this time. Find (a) the net force on the car b) the average power developed by the engine? c) the instantaneous power output of the ...
*October 8, 2012 by Anonymous*

**physics**

A 1.54×10 3 kg car accelerates uniformly from rest to 12.7 m/s in 2.97 s. What is the work done on the car in this time interval? Answer in units of J 002 (part 2 of 2) 10.0 points What is the power delivered by the engine in this time interval? Answer in units of W
*November 8, 2012 by Anonymous*

**Math**

Devon’s bike has wheels that are 27 inches in diameter. After the front wheel picks up a tack, Devon rolls another 100 feet and stops. How far above the ground is the tack?
*April 11, 2010 by Johny G12*

**math**

Devon’s bike has wheels that are 27 inches in diameter. After the front wheel picks up a tack, Devon rolls another 100 feet and stops. How far above the ground is the tack?
*April 12, 2010 by johny g12*

**PHYSICS--SHM**

PLZ HELP. THANKS. The balance wheel of a watch oscillates with an angular amplitude of rad and a period of 0.220 s. a) Find the maximum angular speed of the wheel. (b) Find the angular speed of the wheel when its displacement is /4 rad. (c) Find the magnitude of the angular ...
*January 27, 2007 by wooh*

**Maths**

A ferris wheel has an axle standing 38m off the ground and a radius of 35m. The wheel takes 5 minutes to complete one revolution. The wheel moves in clockwise motion and you are sitting in one of the carriages which is horizontally in line with the axle, moving upwards. Form ...
*May 1, 2012 by Raina*

**physics**

A 1.50 multiplied by 103 kg car starts from rest and accelerates uniformly to 19.9 m/s in 11.6 s. Assume that air resistance remains constant at 400 N during this time. (a) Find the average power developed by the engine. 1 W (b) Find the instantaneous power output of the ...
*October 6, 2010 by bk*

**Physics**

A 1.50 ✕ 103-kg car starts from rest and accelerates uniformly to 19.3 m/s in 11.7 s. Assume that air resistance remains constant at 400 N during this time. (a) Find the average power developed by the engine. W (b) Find the instantaneous power output of the engine at t...
*February 26, 2014 by Muriel*

**physics**

A 1.50 ✕ 103 kg car starts from rest and accelerates uniformly to 17.1 m/s in 12.7 s. Assume that air resistance remains constant at 400 N during this time. (a) Find the average power developed by the engine. W (b) Find the instantaneous power output of the engine at t...
*April 27, 2014 by Anonymous*

**physics**

A constant torque of 20 N.m is applied to a wheel pivoted on a fixed axis. At what rate is power being furnished to the wheel when it is rotating at 0.5 rev/sec?
*December 4, 2010 by Maa*

**Physics**

A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The retarding frictional torque is .12 N.m. Compute the time it will take the wheel to coast to a rest.
*November 27, 2012 by Trevor*

**Physics**

A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The retarding frictional torque is .12 N.m. Compute the time it will take the wheel to coast to a rest.
*November 27, 2012 by Trevor*

**Physics**

A 16 kg mass is attached to a cord that is wrapped around a wheel with a radius of 10.9cm. The acceleration of the mass down the frictionless incline is measured to be 1.4 m/s2.The angle of incline is 36 degrees. Assume the axle of the wheel to be frictionless. The force of ...
*March 26, 2010 by Caryn*

**Physics**

Part 1: A car accelerates uniformly in a straight line from rest at the rate of 2.2 m/s2. What is the speed of the car after it has traveled 52 m? Answer in units of m/s. the answer is 15.126 Part 2: How long does it take the car to travel 52 m? Answer in units of s. ???
*September 30, 2010 by autumn*

**Physics- PLEASE HELP**

A 2300. kg car starts from rest and accelerates uniformly to 24.0 m/s in 24.0 s. Assume that air resistance remains constant at 510 N during this time. Find (a) the net force on the car b) the average power developed by the engine? c) the instantaneous power output of the ...
*October 7, 2012 by Anonymous*

**math**

A ferris wheel has radius of 25 m and its centre is 27 m above the ground. It rotates once every 40 seconds. Sandy gets on the ferris wheel at its lowest point and the wheel starts to rotate. Determine a sinusodial equation that gives her height, h, above the ground as a ...
*March 29, 2010 by CL*

**Math -Trig Please help!**

At one time, Maple Leaf Village (which no longer exists) had North America’s largest Ferris wheel. The Ferris wheel had a diameter of 56 m, and one revolution took 2.5 min to complete. Riders could see Niagara Falls if they were higher than 50 m above the ground. Sketch three ...
*December 1, 2011 by linda*

**physics help!**

The tires of a car make 63 revolutions as the car reduces its speed uniformly from 94.0 km/h to 58.0 km/h. The tires have a diameter of 0.88 m. What was the angular acceleration of each tire? And If the car continues to decelerate at this rate, how much more time is required ...
*March 25, 2010 by Anonymous*

**science/maps**

Earths diameter is about 13,000 Kilometers. If a globe has a diameter of 0.5 meter, write the globe's scale as a ratio. What distance on Earth would 1 centimeter on the globe represent?
*February 20, 2011 by linda*

**physics**

3- An electric motor can accelerate a Ferris wheel of moment of inertia (I =20 000 kg.m2) from rest to (10.0 rev/min) in (12.0 s). When the motor is turned off, friction causes the wheel to slow down from (10.0 to 8.00 rev/min) in (10.0 s). Determine (a) the torque generated ...
*March 16, 2013 by a*

**Stats**

A roulett wheel has 38 slots in which a ball can land two of e slots are green, 18 are red, 18 are black. The ball is equally likely to land in any slot, and each spin of the wheel is assumed to be independent. A)if the wheel is spun twice what is the probability that the ball...
*March 10, 2013 by Salina *

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